vasculaturesubmucosamuscularis externamuscularis mucosaeaccessory organschemical digestionepithelial longitudinalmechanical digestionmucousalimentary canalmucosaserosamechanical digestion is the process of physically breaking apart food in order to increase its surface area.chemical digestionis the process of enzymatically breaking down nutrient polymers into monomersThe digestive system is made up of a series of organs that together form a long tube called the alimentary canalAdditional structures calledaccessory organsprovide assistance in digesting the food passing through the tube, although these structures themselves are not tube-shaped.The organs making-up the "tube" share a similar histology.The muscularis mucosae is the tissue layer that comes in contact with the food passing through the lumen of the tube, and is responsible for absorbingnutrients. Because it is considered an "exterior surface", its surface is an submucosalayer. It contains a lot of vasculaturecells thatproduce mucus. The mucus helps the food slide along the digestive tract. Beneath this top layer, there is a lamina propria layer, and then amuscularis externalayer that moves the mucosa layer. (It is not strong enough to be involved in peristalisis.)Beneath that layer, there is the, which is a semi-dense connective tissue that has a lot ofand nerve fibers.The third histological layer, called theis involved with gastric motility. Throughout the "tube", it has two layers: alayer and a circular layer.The fourth histological layer is called thelayer. It is a fibrous connective tissue layer that supports the other three layers and looselyconnects the "tube" to the abdominopelvic cavity.

The alimentary canal or gastrointestinal tract is a long muscular tube that extends from the mouth…

eneath that layer, there is the which is a semi-dense connective tissue that has a lot of and nerve fibers. he third histological layer, called the is involved with gastric motility. Throughout the "tube", it has two layers: a layer and a circular layer. he fourth histological layer is called the layer. It is a fibrous connective tissue layer that supports the other three layers and loosely onnects the "tube" to the abdominopelvic cavity.

eneath that layer, there is the which is a semi-dense connective tissue that has a lot of and nerve fibers. he third histological layer, called the is involved with gastric motility. Throughout the "tube", it has two layers: a layer and a circular layer. he fourth histological layer is called the layer. It is a fibrous connective tissue layer that supports the other three layers and loosely onnects the "tube" to the abdominopelvic cavity.

Human Anatomy & Physiology (11th Edition)

11th Edition

ISBN:9780134580999

Author:Elaine N. Marieb, Katja N. Hoehn

Publisher:Elaine N. Marieb, Katja N. Hoehn

Chapter1: The Human Body: An Orientation

Section: Chapter Questions

Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...

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